First ultrasound!

I’ll be 16weeks tomorrow and going for my first ultrasound with baby #2!! Disappointed haven’t heard heartbeat or US at doctor appts. Booked a package through a private gal for different stages of pregnancy! Soooo excited. Hubby and our 2.5 yr old daughter coming too! ☺️💜🥰 will she be able to tell if we are having a boy or a girl!? When did you find out ?